Astronomical evidence
LHS 1140 b orbits LHS 1140. The saved catalog gives an orbital period of 24.73723 ± 2e-05 days. Its discovery method is recorded as transit. These quantities describe the real astronomical setting behind the illustration. LHS 1140 b has both a measured mass and a measured radius. Their combination constrains bulk density and makes it possible to compare families of interior models. Several distributions of rock, metal and volatiles can produce related bulk properties, so a density measurement does not directly reveal a coastline or a single atmospheric composition. The catalog radius is 1.73 ± 0.025 Earth radii. The mass entry is 5.6 ± 0.19 Earth masses. The source papers and full table retain the provenance of each parameter.
The illustrated viewpoint
The mineral plain is speculative. A measured radius and a favorable irradiation regime do not establish this surface, its pressure or its weather.
The mineral plain is speculative. A measured radius and a favorable irradiation regime do not establish this surface, its pressure or its weather. All depicted life and technology are fictional.
Catalog measurements & sources
Host: LHS 1140. Snapshot: 25 September 2026. Errors, limits and source provenance are retained. Calculated values and model estimates are not direct measurements. Unknown is not zero; equilibrium temperature is not surface temperature.
| Quantity / unit | Value / reported errors | Source |
|---|---|---|
| Radius · Earth radii | 1.73 (+0.025 / -0.025) | Cadieux et al. 2024 |
| Mass · Earth masses | 5.6 (+0.19 / -0.19) | Cadieux et al. 2024 |
| Density · g/cm³ | 5.9 (+0.3 / -0.3) | Cadieux et al. 2024 |
| Orbital period · days | 24.7372 (+2e-05 / -2e-05) | Cadieux et al. 2024 |
| Orbital semimajor axis · AU | 0.0946 (+0.0017 / -0.0017) | Cadieux et al. 2024 |
| Eccentricity | ≤ 0.043 | Cadieux et al. 2024 |
| Inclination · degrees | 89.86 (+0.04 / -0.04) | Cadieux et al. 2024 |
| Irradiation · Earth flux | 0.43 (+0.03 / -0.03) | Cadieux et al. 2024 |
| Equilibrium temperature · K | 226 (+4 / -4) | Cadieux et al. 2024 |
| Stellar effective temperature · K | 3096 (+48 / -48) | Cadieux et al. 2024 |
| Stellar radius · Solar | 0.2159 (+0.003 / -0.003) | Cadieux et al. 2024 |
| Stellar mass · Solar | 0.1844 (+0.0045 / -0.0045) | Cadieux et al. 2024 |
| Stellar luminosity · log Solar | -2.42022 (+0.033 / -0.03572) | Cadieux et al. 2024 |
| Stellar age · Gyr | ≥ 5 | Cadieux et al. 2024 |
| Stellar metallicity · dex | -0.15 (+0.09 / -0.09) | Cadieux et al. 2024 |
| Distance · pc | 14.9861 (+0.0153 / -0.0152) | TICv8 |